What is the problem?
Ocotprint regularly has under voltage warnings along with random ui restarts
What did you already try to solve it?
Multiple new PSU, Official Raspberry Pi power supplies as well as two new canakit psu.
I've also tried only running it with barebones as well as plugging one peripheral in at a time to see if it was the screen or perhaps the printer, or even the c270 web camera. But it does the undervoltage no matter what is or isn't plugged in.
I also have a USB power meter that is showing the canankit psu at 5.15Volts nominally, witha .85amp draw. Every other power supply only gets asked for around .5amp.
Have you tried running in safe mode?
Yes same issue.
Did running in safe mode solve the problem?
Negative Ghost Rider
serial.log or output on terminal tab at a minimum, browser error console if UI issue ... no logs, no support! Not log excerpts, complete logs.)
Additional information about your setup
OctoPrint version, OctoPi version, printer, firmware, browser, operating system, ... as much data as possible